Oooh! That! Yes, well, during the days when Fandral Staghelm was Archdruid the collection of morrowgrain was a big deal. Back then you’d have to down to Un’Goro Crater and collect Un’Goro Soil from Un’goro Dirt Piles (though they’d occasionally drop from mobs there as well). Supposedly this herb was so sensitive it was nearly impossible to grow it on any other type of soil, so these dirt piles were very coveted by the night elf druids for Staghelm.
Beurghes decided to start a morrowgrain plantation down in Un’Goro Crater so as to up the production of the herb strictly for Staghelm. There’d be druids collecting and delivering the morrowgrain directly from the crater to Darnassus. Since Beurghes and his druids were so far away from Darnassus, news of Staghelm’s betrayal did not reach them until the Sentinels arrived to arrest the druids and destroy the plantation, burning it to the ground. Beurghes was released a few months later.
During his time in the plantation Beurghes had studied the herb, curious to its properties and why the Archdruid would want them in such large quantities. He had experimented with the morrowgrain and did all kinds of research related thereof, and though he did not reach anything conclusive still he deeply believed there was something special about the herb that everyone else was overlooking as merely a poisonous weed that no one should ever dabble with again.
At this time he was taking care of his elderly father, suffering from the ailments of old age until his death. This was the first time Beurghes had seen the suffering from mortality, and turned his attention back to the morrowgrain for a solution. He did not believe that morrowgrain could grant them immortality, but perhaps longevity and/or a more sufferable transition into old age. After all, many medicines were derived from plants and herbs once considered poisonous and dangerous, surely the morrowgrain could be given a new light.
Beurghes found a way to grow the morrowgrain himself by mimicking the soil and environmental properties of Un’Goro. The soil had to be rich with rotten organic material, animal and plant, and the air consistently thick, humid, and warm. He set up a greenhouse of sorts in a cave in Feralas, where he could control the climate and habitat. Decaying plant material was easy to come by, and corpses from nearby battle grounds soon replaced animals. The morrowgrain grew and thrived under his diligent care.
All he found was poison and ruin. There was no redemption to the herb. But still he insisted, still he experimented, and often became sick from long exposure to the spores which eventually led to his blood growing toxic. He sells his morrowgrain to crafty Highborne that are interested in such venoms.